I’ve spent the past few days trying to play around with the interfaces between VLANS to support the core. My setup consists of three VLANS: one that contains the core, one with the remotes (my trusted network), and the third with end points (sonos speakers).
I have a MDNS repeater turned on between the VLANS on in the router to support multicasting and I have the router explicitly relaying the the UDP and TCP traffic on ports 9003 and 9100-9200 across all the VLANS, but that hasn’t seemed to help with the discovery process. Are there other things you’ve noticed or suggest testing to help with the discovery process?